From 2e0bab1770d6e3c16a26520c527fdac46d59af78 Mon Sep 17 00:00:00 2001
From: Erik Hatcher <ehatcher@apache.org>
Date: Wed, 16 May 2007 14:06:53 +0000
Subject: [PATCH] Adjust mappers with dependencies to conditionally load

git-svn-id: https://svn.apache.org/repos/asf/lucene/solr/trunk@538603 13f79535-47bb-0310-9956-ffa450edef68
---
 .../lib/solr/importer/hpricot_mapper.rb       | 19 +++++++++----
 .../lib/solr/importer/xpath_mapper.rb         | 28 ++++++++++++-------
 2 files changed, 31 insertions(+), 16 deletions(-)

diff --git a/client/ruby/solr-ruby/lib/solr/importer/hpricot_mapper.rb b/client/ruby/solr-ruby/lib/solr/importer/hpricot_mapper.rb
index f3fe3e0368d..53a48e4314d 100644
--- a/client/ruby/solr-ruby/lib/solr/importer/hpricot_mapper.rb
+++ b/client/ruby/solr-ruby/lib/solr/importer/hpricot_mapper.rb
@@ -10,11 +10,18 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-require 'hpricot'
+begin
+  require 'hpricot'
 
-# For files with the first line containing field names
-class Solr::Importer::HpricotMapper < Solr::Importer::Mapper
-  def field_data(doc, path)
-    doc.search(path.to_s).collect { |e| e.inner_html }
+  class Solr::Importer::HpricotMapper < Solr::Importer::Mapper
+    def field_data(doc, path)
+      doc.search(path.to_s).collect { |e| e.inner_html }
+    end
   end
-end
+rescue LoadError => e # If we can't load hpricot
+  class Solr::Importer::HpricotMapper
+    def initialize(mapping, options={})
+      raise "Hpricot not installed."
+    end
+  end
+end
\ No newline at end of file
diff --git a/client/ruby/solr-ruby/lib/solr/importer/xpath_mapper.rb b/client/ruby/solr-ruby/lib/solr/importer/xpath_mapper.rb
index 4fad299f33d..772e1c3c1f0 100755
--- a/client/ruby/solr-ruby/lib/solr/importer/xpath_mapper.rb
+++ b/client/ruby/solr-ruby/lib/solr/importer/xpath_mapper.rb
@@ -10,18 +10,26 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-require 'xml/libxml'
+begin
+  require 'xml/libxml'
 
-# For files with the first line containing field names
-class Solr::Importer::XPathMapper < Solr::Importer::Mapper
-  def field_data(doc, xpath)
-    doc.find(xpath.to_s).collect do |node|
-      case node
-        when XML::Attr
-          node.value
-        when XML::Node
-          node.content
+  # For files with the first line containing field names
+  class Solr::Importer::XPathMapper < Solr::Importer::Mapper
+    def field_data(doc, xpath)
+      doc.find(xpath.to_s).collect do |node|
+        case node
+          when XML::Attr
+            node.value
+          when XML::Node
+            node.content
+        end
       end
     end
   end
+rescue LoadError => e # If we can't load libxml
+  class Solr::Importer::XPathMapper
+    def initialize(mapping, options={})
+      raise "libxml not installed"
+    end
+  end
 end